| Line 45... |
Line 45... |
end
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end
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end
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end
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// packet parser: counter
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// packet parser: counter
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reg [ 9:0] int_cnt, bypass_ipv4_cnt, bypass_ipv6_cnt, bypass_udp_cnt, ptp_cnt;
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reg [ 9:0] int_cnt, bypass_ipv4_cnt, bypass_ipv6_cnt, bypass_udp_cnt, ptp_cnt;
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reg bypass_vlan, ptp_l2, bypass_ipv4, bypass_ipv6, found_udp, bypass_udp, ptp_l4, ptp_event;
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reg bypass_vlan, ptp_l2, bypass_mpls, bypass_ipv4, bypass_ipv6, found_udp, bypass_udp, ptp_l4, ptp_event;
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reg [ 3:0] ptp_msgid;
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reg [ 3:0] ptp_msgid;
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reg [15:0] ptp_seqid;
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reg [15:0] ptp_seqid;
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always @(posedge rst or posedge clk) begin
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always @(posedge rst or posedge clk) begin
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if (rst) begin
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if (rst) begin
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int_cnt <= 10'd0;
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int_cnt <= 10'd0;
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| Line 59... |
Line 59... |
end
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end
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else begin
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else begin
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if (int_valid && int_sop)
|
if (int_valid && int_sop)
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int_cnt <= 10'd0;
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int_cnt <= 10'd0;
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else if (int_valid)
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else if (int_valid)
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int_cnt <= int_cnt + 10'd1 - bypass_vlan - (bypass_ipv4 || bypass_ipv6 || bypass_udp);
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int_cnt <= int_cnt + 10'd1 - bypass_vlan - bypass_mpls - (bypass_ipv4 || bypass_ipv6 || bypass_udp);
|
|
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if (int_valid && int_sop)
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if (int_valid && int_sop)
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bypass_ipv4_cnt <= 10'd0;
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bypass_ipv4_cnt <= 10'd0;
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else if (int_valid && bypass_ipv4)
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else if (int_valid && bypass_ipv4)
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bypass_ipv4_cnt <= bypass_ipv4_cnt + 10'd1;
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bypass_ipv4_cnt <= bypass_ipv4_cnt + 10'd1;
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| Line 87... |
Line 87... |
|
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// packet parser: comparator
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// packet parser: comparator
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always @(posedge rst or posedge clk) begin
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always @(posedge rst or posedge clk) begin
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if (rst) begin
|
if (rst) begin
|
bypass_vlan <= 1'b0;
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bypass_vlan <= 1'b0;
|
|
bypass_mpls <= 1'b0;
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bypass_ipv4 <= 1'b0;
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bypass_ipv4 <= 1'b0;
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bypass_ipv6 <= 1'b0;
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bypass_ipv6 <= 1'b0;
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found_udp <= 1'b0;
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found_udp <= 1'b0;
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bypass_udp <= 1'b0;
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bypass_udp <= 1'b0;
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ptp_l2 <= 1'b0;
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ptp_l2 <= 1'b0;
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ptp_l4 <= 1'b0;
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ptp_l4 <= 1'b0;
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ptp_event <= 1'b0;
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ptp_event <= 1'b0;
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end
|
end
|
else if (int_valid && int_sop) begin
|
else if (int_valid && int_sop) begin
|
bypass_vlan <= 1'b0;
|
bypass_vlan <= 1'b0;
|
|
bypass_mpls <= 1'b0;
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bypass_ipv4 <= 1'b0;
|
bypass_ipv4 <= 1'b0;
|
bypass_ipv6 <= 1'b0;
|
bypass_ipv6 <= 1'b0;
|
found_udp <= 1'b0;
|
found_udp <= 1'b0;
|
bypass_udp <= 1'b0;
|
bypass_udp <= 1'b0;
|
ptp_l2 <= 1'b0;
|
ptp_l2 <= 1'b0;
|
| Line 116... |
Line 118... |
else if (int_valid && int_cnt==10'd4 && int_data[31:16]==16'h8100 && bypass_vlan) // svlan_type == cvlan
|
else if (int_valid && int_cnt==10'd4 && int_data[31:16]==16'h8100 && bypass_vlan) // svlan_type == cvlan
|
bypass_vlan <= 1'b1;
|
bypass_vlan <= 1'b1;
|
else if (int_valid && bypass_vlan)
|
else if (int_valid && bypass_vlan)
|
bypass_vlan <= 1'b0;
|
bypass_vlan <= 1'b0;
|
|
|
|
// bypass mpls
|
|
if (int_valid && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) &&
|
|
(int_data[31:16]==16'h8847 || int_data[31:16]==16'h8848)) // ether_type == mpls
|
|
bypass_mpls <= 1'b1;
|
|
else if (int_valid && int_cnt==10'd4 && bypass_mpls &&
|
|
int_data[24]==1'b0) // bottom of label stack == 0
|
|
bypass_mpls <= 1'b1;
|
|
else if (int_valid && bypass_mpls)
|
|
bypass_mpls <= 1'b0;
|
|
|
// bypass ipv4
|
// bypass ipv4
|
if (int_valid && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv4_cnt==10'd0 &&
|
if (int_valid && (int_cnt==10'd3 || (bypass_vlan || bypass_mpls) && int_cnt==10'd4) && bypass_ipv4_cnt==10'd0 &&
|
int_data[31:16]==16'h0800 && int_data[15:12]==4'h4) // ether_type == ipv4, ip_version == 4
|
(int_data[31:16]==16'h0800 || bypass_mpls) && int_data[15:12]==4'h4) // ether_type == ipv4, ip_version == 4
|
bypass_ipv4 <= 1'b1;
|
bypass_ipv4 <= 1'b1;
|
else if (int_valid && bypass_ipv4_cnt==10'd4)
|
else if (int_valid && bypass_ipv4_cnt==10'd4)
|
bypass_ipv4 <= 1'b0;
|
bypass_ipv4 <= 1'b0;
|
|
|
// bypass ipv6
|
// bypass ipv6
|
if (int_valid && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv6_cnt==10'd0 &&
|
if (int_valid && (int_cnt==10'd3 || (bypass_vlan || bypass_mpls) && int_cnt==10'd4) && bypass_ipv6_cnt==10'd0 &&
|
int_data[31:16]==16'h86dd && int_data[15:12]==4'h6) // ether_type == ipv6, ip_version == 6
|
(int_data[31:16]==16'h86dd || bypass_mpls) && int_data[15:12]==4'h6) // ether_type == ipv6, ip_version == 6
|
bypass_ipv6 <= 1'b1;
|
bypass_ipv6 <= 1'b1;
|
else if (int_valid && bypass_ipv6_cnt==10'd9)
|
else if (int_valid && bypass_ipv6_cnt==10'd9)
|
bypass_ipv6 <= 1'b0;
|
bypass_ipv6 <= 1'b0;
|
|
|
// check if it is UDP
|
// check if it is UDP
|
| Line 156... |
Line 168... |
|
|
// check if it is PTP Event message
|
// check if it is PTP Event message
|
if (int_valid && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data[31:16]==16'h88F7 &&
|
if (int_valid && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data[31:16]==16'h88F7 &&
|
(int_data[11: 8]== 4'h0 || int_data[11:8]==4'h2)) // ptp_message_id == sync || delay_req
|
(int_data[11: 8]== 4'h0 || int_data[11:8]==4'h2)) // ptp_message_id == sync || delay_req
|
ptp_event <= 1'b1;
|
ptp_event <= 1'b1;
|
else if (int_valid && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) && bypass_udp_cnt==10'd1 && ptp_l4 &&
|
else if (int_valid && int_cnt==10'd4 && bypass_udp_cnt==10'd1 && ptp_l4 &&
|
(int_data[11: 8]== 4'h0 || int_data[11:8]==4'h2)) // ptp_message_id == sync || delay_req
|
(int_data[11: 8]== 4'h0 || int_data[11:8]==4'h2)) // ptp_message_id == sync || delay_req
|
ptp_event <= 1'b1;
|
ptp_event <= 1'b1;
|
end
|
end
|
end
|
end
|
|
|
